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Raspberry Pi launches its IPO
(www.raspberrypi.com)
This is a most excellent place for technology news and articles.
If you want a SBC, a lepotato works really well, supposed to be more performant than a 3B. I used as an alternate to a raspberry pi for a klipper setup, running armbian on it now.
There are updated versions of it as well if you need more performance, but they're cheaper than an equivalent pi and importantly, purchasable which was an issue when I was putting together that printer.